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INCOME TAXES, VALUATION ALLOWANCE (Details) - USD ($) | 12 Months Ended
--- | ---
Jun. 30, 2015 | Jun. 30, 2014
Movement in Valuation Allowances and Reserves [Roll Forward] |  |
Balance, beginning of year | $ (370,409) |
Balance, end of year | (370,409) | $ (370,409)
Valuation Allowance of Deferred Tax Assets [Member] |  |
Movement in Valuation Allowances and Reserves [Roll Forward] |  |
Balance, beginning of year | (370,409) | (222,409)
Increase in valuation allowance | 0 | (148,000)
Release of valuation allowance | 0 | 0
Balance, end of year | $ (370,409) | $ (370,409)

X
- Definition The amount of the increase in the period in the valuation allowance for a specified deferred tax asset. + References No definition available. + Details
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Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition The amount of the decrease in the period in the valuation allowance for a specified deferred tax asset. + References No definition available. + Details
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Namespace Prefix: | koss_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Amount of deferred tax assets for which it is more likely than not that a tax benefit will not be realized. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=6907707&loc=d3e32537-109319 + Details
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Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition A roll forward is a reconciliation of a concept from the beginning of a period to the end of a period. + References No definition available. + Details
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Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
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X
- Details
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Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |